# Xynaptic Gas Tariff Zone

> Xynaptic Gas Tariff Zone is a paid API for AI agents from api.xynaptic.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Returns the official CRE-regulated gas tariff zone (1–6) for any French postcode, where zone 1 is cheapest and zone 6 is most expensive.

## Facts

- Endpoint: GET https://api.xynaptic.io/v1/gas-tariff-zone?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xynaptic-gas-tariff-zone-99ac1901
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3aIa-Vinwo6K3qZNK16xn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability xynaptic-gas-tariff-zone-99ac1901
```

Example prompt: What gas tariff zone is postcode 69003 in? I need to know my CRE zone before comparing gas offers.

## When to prefer this

Choose this endpoint when you need the official CRE-regulated gas tariff zone for a French postcode, especially before comparing gas supplier offers or onboarding customers in France. It covers 9,700+ communes and is sourced directly from CRE open data, making it authoritative for regulatory compliance and pricing logic.

## Known failure modes

- Invalid or non-existent postcode returns an error or empty result
- Non-French postcodes are not supported
- Overseas territories (DOM-TOM) may not be covered
- Payment failure (x402) if USDC balance is insufficient
- Rate limiting if quota is exceeded

## How this service works

Xynaptic Gas Tariff Zone — the official regulated gas price zone (1-6) for any French postcode, from CRE open data (9,700+ communes). Zone 1 = cheapest baseline, zone 6 = most expensive — know your gas cost level before comparing offers. GET ?cp=75001.

## Output

Returns the regulated gas tariff zone number (1 through 6) assigned to the given French postcode, sourced from CRE open data covering 9,700+ communes. Zone 1 represents the cheapest baseline and zone 6 the most expensive. The response allows energy comparison tools, onboarding flows, and pricing engines to correctly classify a customer's gas cost level.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xynaptic-gas-tariff-zone-99ac1901/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.xynaptic.io](https://www.zero.xyz/host/api.xynaptic.io/llms.txt)